Sampling Techniques

Sampling or more popularly referred to as “sampling” is a specific procedure to be followed when a substance, material or product is taken to provide for testing of a representative sample of the whole. A substance, material or product sampled for a variety of reasons depending on its importance:
 the reception: to assure that the product meets the specifications.
 during storage and handling: to secure handover and pricing, to monitor the condition and quality of the product.

Various standard sampling methods can be selected according to the purpose and usefulness of sampling. While the container materials (container, vessel) and the volume size is very dependent on the type of sample to be taken. According to the uptake sampling techniques can be divided into:
– Manual Sampling
– Automatic Sampling

By type phase taken the substance or material that is taken can be:
– Gas phase and gas phase liquefied
– The liquid phase
– Solid Phase

According to the type of product that will be in sampling can be distinguished:
– Water (water, bottled drinking water, waste water, formation water)
– Gas (gas emissions, ambient gas, natural gas)
– Petroleum and its products, etc. material.

Some standard methods used are related to the sampling of petroleum and its results, among others:
– ASTM Standards:
 D 3700 Practice for Containing Hydrocarbon Fluid Samples Using a Floating Piston Cylinder.
 D 4057 Practice for Manual Sampling of Petroleum and Petroleum Products.
 D 4306 Practice for Aviation Fuel Sample Contriners for Test Affected by Trace Contamination.
 D 4177 Practice for Automatic Sampling of Petroleum and Petroleum Products.

 D 5842 Practice for Sampling and Handling of Fuels for Volatility Measurements.
 D 5854 Practice for Mixing and Handling of Liquid samples of Petroleum and Petroleum Products.
– Petroleum Measurement Standards, API
– Standard GPA:
 GPA Standard 2166-86, Obtaining Natural Gas Sample for Analysis by Gas Chromatography